Cost and flexibility are only two of MANY issue when making a clear body kit. Please note that none of the more recent kits are near the size of the Petty Charger, not near the age of the Petty mold......that has been modified a number of times. I have two friends in the industrial molding industry......both talk about how hard it would be to get a mold the size of the Petty kit to come out correct EVERY time.....which is what is required in mass production. Ten percent rejects would have raised the cost a bunch.
I am thankful R2 spent the money to restore the kit......I'd take the kit in pink right now.......